The best photo there is of a sailing dinghy on the edge of control. An Historical Australian 18-footer but I don't have anything else, such as the name of the 18-footer, or the date. I assume the photo comes from the archives of the Australian National Maritime Museum which has done a superb job of releasing historical photos onto the Web.
Update: Neil Kennedy comes forward with the complete history behind the photo.
"The 18ft skiff is Crows Nest II ( ex Almae) taken in the 1952 season on Sydney Harbour. The helmsman is Cliffie Monkhouse who was one of the legends of Sydney 18ft skiff sailing. The following season 1953 he sailed the first of his skiffs named Toogara and continued with a series of skiffs of the same name until the 1965 season.
His sail insigna of a black shield with a red ball was instantly recognisable. The photo itself is one of the many fabulous pictures of 18 foot Skiffs in Robin Elliots book "Galloping Ghosts" the story of Australian 18ft skiffs 1890-1965 which was first published in 2012.
Neil Kennedy ( Nedslocker)
The frontispiece for Robin Elliott's book "Galloping Ghosts".
A few of the Robin Elliott book are available on Ebay.